public class Demo06 {
    public static void main(String[] args) {
        System.out.println(" \tHello\n".trim());
        System.out.println("\u3000Hello\u3000".strip());
        System.out.println(" hello ".stripLeading());
        System.out.println(" hello ".stripTrailing());
        System.out.println("".isEmpty());
        System.out.println(" ".isEmpty());
        System.out.println(" \n".isBlank());
        System.out.println(" hello ".isBlank());
    }
}
